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A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure

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Published on: February 20, 2019

All-polymer piezo-ionic-electric electronics.

Tianpei Xu¹, Long Jin², Yong Ao¹

¹Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, 610031, China.

Nature Communications

|December 31, 2024

Summary

This summary is machine-generated.

This study introduces novel all-polymer piezo-ionic-electric electronics that enhance performance through regularized ion-electron interfaces. The new design significantly boosts force-electric coupling for flexible sensing and energy harvesting applications.

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Area of Science:

Materials Science
Polymer Electronics
Nanotechnology

Background:

All-organic piezoelectric systems face challenges with low electromechanical performance due to disordered interfaces.
Improving interfacial properties is crucial for advancing flexible electronics in sensing and energy harvesting.

Purpose of the Study:

To develop highly-performant all-polymer piezo-ionic-electric electronics.
To investigate the synergistic coupling of piezoelectric and piezoionic effects at regularized interfaces.
To enhance force-electric coupling for improved energy harvesting and sensing capabilities.

Main Methods:

Fabrication of a polyvinylidene difluoride/Nafion/polyvinylidene difluoride (PVDF/Nafion/PVDF) sandwich structure.
Engineering regularized ion-electron interfaces to promote interfacial charge accumulation.
Characterization of piezoelectric coefficients, pressure sensitivity, and power generation.

Main Results:

Achieved a high piezoelectric coefficient (d33) of ~80.70 pC N⁻¹.
Demonstrated a pressure sensitivity of 51.50 mV kPa⁻¹.
Obtained a maximum peak power density of 34.66 mW m⁻².

Conclusions:

The developed piezo-ionic-electric electronics exhibit a unique working mechanism based on coupled piezoelectric and piezoionic effects.
Massive interfacial ion and electron charge accumulation leads to remarkable force-electric coupling enhancement.
This work presents a paradigm for highly-optimized all-polymer piezoelectric generators for flexible applications.